Metallurgical Silicon Khoom

Silicon hlau ntau lawm muaj cov txheej txheem sib txawv kom tau txais ntau theem ntawm purity. Rau cov txheej txheem metallurgical qib silicon uas yog 98-99.5% ntshiab, high-purity silica reacted nrog ntoo los yog charcoal nyob rau hauv ib tug hluav taws xob arc rauv. Purer> 99.9% Si tuaj yeem muab rho tawm ncaj qha los ntawm silica lossis lwm cov khoom siv silicon, los ntawm cov txheej txheem ntawm molten ntsev electrolysis. Polycrystalline silicon, uas muaj impurity theem tsawg dua 10-9, yog tsim los ntawm Siemens txheej txheem. Ntiaj teb kev tsim khoom yog kwv yees los ntawm USGS ntawm 5,700, 000 mt ib xyoos (suav nrog txhua hom silicon). Rau silicon hlau ib leeg, ntiaj teb ntau lawm sawv ntawm ib feem ntawm daim duab saum toj no, ntawm 1,750,{11}} mt ib xyoo, qhov twg Tuam Tshoj tsim 900,{13}} mt ib xyoo ntawm silicon hlau, Russia 500,{{ 15}} mt ib xyoo, nrog rau lwm lub teb chaws tsim nyob rau hauv cheeb tsam ntawm 800, 000 mt ib xyoo.